Lower cylinder head fastening assembly

Abstract

The utility model relates to the technical field of lower cylinder cover fastening assembly, especially to a lower cylinder cover fastening assembly, which comprises a fastening structure and an adjusting structure. The fastening structure comprises a fixing part and a locking part, the outer side of the fixing part is provided with a guide groove, and the locking part is connected through the guide groove; the adjusting structure is arranged inside the fixing part and comprises an adjusting rod, a limiting protrusion, a driving part and an adjusting sleeve, and is used for dynamically adjusting the fastening force. The fixing part is provided with a mounting seat at both ends, and contains an elastic supporting part to absorb vibration. Through the synergistic effect of the adjusting structure and the fastening structure, the application reduces the installation precision requirement, reduces the stress concentration and loosening risk, and improves the operation convenience and operation stability.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical connection and fastening technology, specifically a lower cylinder head fastening assembly. Background Technology

[0002] In the assembly and maintenance of mechanical equipment, the lower cylinder head fastening assembly is one of the key components ensuring the equipment's sealing and stability. Currently, most lower cylinder head fastening assemblies on the market use a combination structure of bolts, nuts, and washers. While this design can meet basic fastening requirements, it still has certain limitations in practical applications. For example, traditional fastening assemblies require high operational precision during installation and disassembly, and have strict requirements on the fit tolerances of parts. In addition, after long-term operation, problems such as loosening or stress concentration are prone to occur, affecting the overall performance of the equipment.

[0003] Therefore, we made improvements and proposed a lower cylinder head fastening assembly. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the existing technology of high operational precision requirements, strict tolerance of parts fit, and easy loosening or stress concentration in the installation and disassembly of the lower cylinder head fastening assembly.

[0005] To achieve the aforementioned objectives and address the aforementioned problems, this utility model provides a lower cylinder head fastening assembly, comprising a fastening structure and an adjusting structure. The fastening structure includes a fixing member and a locking member. The fixing member has a guide groove on its outer side, and the locking member is connected to the fixing member through the guide groove. The adjusting structure is located inside the fixing member and is used to dynamically adjust the fastening force. Both ends of the fixing member have mounting seats, and the mounting seats have elastic support members inside.

[0006] The adjustment structure includes an adjustment rod with several limiting protrusions on its outer side. A limiting groove is formed between two adjacent limiting protrusions. A driving member is provided at the end of the adjustment rod. The driving member is connected to the adjustment rod by a thread. An adjustment sleeve is fitted on the outer side of the adjustment rod. The inner wall of the adjustment sleeve is provided with a locking block that matches the limiting groove. The locking block is embedded in the limiting groove to restrict the axial movement of the adjustment sleeve.

[0007] As a preferred technical solution of this application, the fastener includes a main body section and a connecting section. The outer side of the main body section is provided with an annular groove, and the inner wall of the annular groove is provided with a plurality of positioning holes. One end of the connecting section is fixedly connected to the main body section, and the other end is provided with a mounting hole that matches the mounting base.

[0008] As a preferred technical solution of this application, the locking component includes a locking ring and a locking block. The inner wall of the locking ring is provided with a serrated structure. The locking block is fixedly connected to the outer side of the locking ring. The end of the locking block is provided with a guide block that matches the guide groove. The guide block is embedded in the guide groove to realize the connection between the locking component and the fixing component.

[0009] As a preferred technical solution of this application, the mounting base includes a base and a support column. The base has an internal receiving groove. One end of the support column is fixedly connected to the base, and the other end has a connecting hole that matches the fixing member. The elastic support member is disposed in the receiving groove and contacts the end of the support column.

[0010] As a preferred technical solution of this application, the elastic support includes a spring and a support pad. One end of the spring is fixedly connected to the support pad, and the other end contacts the bottom of the receiving groove. The outer side of the support pad is provided with anti-slip texture.

[0011] As a preferred technical solution of this application, the driving component includes a knob and a transmission rod. The knob is fixedly connected to one end of the transmission rod, and the other end of the transmission rod is provided with a threaded section that matches the adjusting rod. The transmission rod is connected to the adjusting rod through the threaded section.

[0012] As a preferred technical solution of this application, the outer side of the adjusting sleeve is provided with an anti-slip layer, and the surface of the anti-slip layer is provided with a plurality of raised structures, which are evenly distributed on the surface of the anti-slip layer.

[0013] As a preferred technical solution of this application, the main body section of the fastener is provided with a through hole that matches the adjusting rod. The through hole passes through both ends of the main body section, and the inner wall of the through hole is provided with a guide groove that matches the limiting protrusion.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the scheme of this application:

[0016] Through the designed adjustment and fastening structures, the adjusting sleeve can be moved axially along the fixing component via the adjusting rod during installation, thereby adjusting the fastening force. Simultaneously, the fastening state is locked by the connection between the locking component and the fixing component. During long-term operation, the elastic support absorbs vibration and impact, preventing loosening due to stress concentration. Furthermore, the cooperative design of the limiting protrusion and the locking block ensures that the adjusting sleeve remains stable in a specific position, preventing changes in the fastening force due to external interference. Through the synergistic effect of these structures, the problems of high operational precision requirements, strict part tolerances, and the tendency for loosening or stress concentration after long-term operation in traditional lower cylinder head fastening assemblies are solved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is an enlarged structural schematic diagram of the locking component in this utility model.

[0019] Figure 3 This is an enlarged schematic diagram of the adjustment structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the mounting base of this utility model.

[0021] Figure 5 This is a detailed view of the connection between the drive component and the adjusting rod of this utility model.

[0022] The attached figures are labeled as follows:

[0023] 1. Fixing component; 2. Locking component; 3. Adjusting rod; 4. Limiting protrusion; 5. Limiting groove; 6. Adjusting sleeve; 7. Locking block; 8. Mounting base; 9. Elastic support component; 10. Driving component. Detailed Implementation

[0024] This utility model provides a lower cylinder head fastening assembly, the specific implementation of which is described in detail with reference to the accompanying drawings. Figure 1 As shown, the lower cylinder head fastening assembly includes a fixing component 1, a locking component 2, an adjusting rod 3, a limiting protrusion 4, a limiting groove 5, an adjusting sleeve 6, a locking block 7, a mounting base 8, an elastic support component 9, and a driving component 10. The specific structure, connection relationship, and working principle of each component will be described in detail below with reference to the accompanying drawings.

[0025] The fastener 1 is the core component of the entire assembly, comprising a main body section and a connecting section. The main body section has an annular groove on its outer side, and several positioning holes on the inner wall of the groove for mating with other components or for auxiliary positioning. One end of the connecting section is fixedly connected to the main body section, and the other end has a mounting hole that matches the mounting base 8. Mounting bases 8 are provided at both ends of the fastener 1, and each mounting base 8 contains an elastic support 9. Figure 4 As shown, the mounting base 8 consists of a base and a support column. The base has an internal receiving groove. One end of the support column is fixedly connected to the base, and the other end has a connecting hole that matches the fixing member 1. The elastic support member 9 is located in the receiving groove and contacts the end of the support column. The elastic support member 9 includes a spring and a support pad. One end of the spring is fixedly connected to the support pad, and the other end contacts the bottom of the receiving groove. The outer side of the support pad has anti-slip texture to increase friction and prevent slippage.

[0026] Locking component 2 is connected to fixing component 1 via guide groove. Locking component 2 includes locking ring and locking block, such as... Figure 2As shown. The inner wall of the locking ring has a serrated structure. The locking block is fixedly connected to the outer side of the locking ring. The end of the locking block has a guide block that matches the guide groove. The guide block is embedded in the guide groove to realize the connection between the locking member 2 and the fixing member 1. The serrated structure design can enhance the biting force between the locking member 2 and the fixing member 1, thereby improving the fastening effect.

[0027] An adjustment structure is located inside the fixing member 1 and is used to dynamically adjust the fastening force. The adjustment structure includes an adjustment rod 3, with several limiting protrusions 4 on the outer side of the adjustment rod 3. A limiting groove 5 is formed between two adjacent limiting protrusions 4. A driving member 10 is provided at the end of the adjustment rod 3. Figure 5 As shown, the driving component 10 includes a knob and a transmission rod. The knob is fixedly connected to one end of the transmission rod, and the other end of the transmission rod has a threaded section that matches the adjusting rod 3. The transmission rod is connected to the adjusting rod 3 through the threaded section. An adjusting sleeve 6 is fitted on the outer side of the adjusting rod 3. The inner wall of the adjusting sleeve 6 has a locking block 7 that matches the limiting groove 5. The locking block 7 is embedded in the limiting groove 5 to restrict the axial movement of the adjusting sleeve 6. An anti-slip layer is provided on the outer side of the adjusting sleeve 6. The surface of the anti-slip layer has several evenly distributed protrusions to facilitate anti-slip when the operator applies force.

[0028] The main body of the fixing component 1 has a through hole that matches the adjusting rod 3. The through hole extends through both ends of the main body, and the inner wall of the through hole has a guide groove that matches the limiting protrusion 4. When the adjusting rod 3 moves within the through hole, the limiting protrusion 4 slides along the guide groove, ensuring that the movement trajectory of the adjusting rod 3 is stable and precise.

[0029] In actual use, the fixing component 1 is first fixed to the lower cylinder head via the mounting base 8. The spring of the elastic support component 9 is initially in a pre-tightened state, providing buffer and support for subsequent tightening operations. Then, the locking component 2 is connected to the fixing component 1 via the guide groove, and the guide block on the locking block is embedded in the guide groove of the fixing component 1, completing the initial assembly. Next, the transmission rod is rotated by rotating the knob of the drive component 10. The threaded section of the transmission rod engages with the threaded section of the adjusting rod 3, causing the adjusting rod 3 to move axially. The movement of the adjusting rod 3 causes the adjusting sleeve 6 to move axially along the through hole of the fixing component 1. At the same time, the locking block 7 on the inner wall of the adjusting sleeve 6 is embedded in the limiting groove 5, ensuring that the adjusting sleeve 6 remains stable in a specific position. The tightening force is changed by moving the adjusting sleeve 6 until the desired tightening state is achieved.

[0030] During prolonged operation, when the lower cylinder head is subjected to vibration or impact, the spring in the elastic support 9 absorbs these external forces, preventing loosening caused by stress concentration. Furthermore, the serrated structure of the locking element 2 and its tight fit with the fixing element 1 further enhance overall stability, preventing changes in the fastening force due to external interference. Through the synergistic effect of these structures, the lower cylinder head fastening assembly achieves both convenience and reliability during installation and disassembly.

[0031] In this embodiment, the materials selected for all components must meet the requirements of mechanical strength and durability. For example, high-strength alloy steel can be used for the fixing part 1 and the locking part 2, and high-quality carbon steel can be used for the spring of the elastic support part 9 to ensure that it maintains good performance during long-term use. In addition, the machining accuracy of each component must be strictly controlled, especially the dimensional tolerances of the guide groove, the limiting groove 5 and the locking block 7, to ensure smooth assembly and the stability of the overall structure.

[0032] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0033] During the assembly of mechanical equipment, the fastener 1 is first fixed to the lower cylinder head via the mounting base 8. For example... Figure 4 As shown, the mounting base 8 has an internal elastic support 9, which includes a spring and a support pad. One end of the spring is connected to the support pad, and the other end contacts the bottom of the receiving groove. Initially, the spring is in a pre-tensioned state. This design allows the elastic support 9 to provide cushioning during subsequent operations, while also laying the foundation for the stability of the entire assembly.

[0034] Next, the locking element 2 is connected to the fixing element 1 via the guide groove. For example... Figure 2 As shown, the locking block end of the locking member 2 is provided with a guide block, which is embedded in the guide groove of the fixing member 1, thereby completing the initial assembly. The serrated structure of the inner wall of the locking ring fits tightly with the fixing member 1, enhancing the interlocking force between the two. This structural design not only improves the fastening effect but also effectively prevents loosening caused by external vibration or impact.

[0035] Subsequently, the transmission rod is rotated by rotating the knob of the drive component 10. For example... Figure 5 As shown, the threaded section of the transmission rod matches the adjusting rod 3. When the transmission rod rotates, the adjusting rod 3 moves axially. A limiting protrusion 4 is provided on the outer side of the adjusting rod 3. The limiting protrusion 4 slides along the guide groove on the inner wall of the through hole of the fixing member 1, ensuring that the movement trajectory of the adjusting rod 3 is stable and precise. The movement of the adjusting rod 3 further drives the adjusting sleeve 6 to move axially along the through hole of the fixing member 1. The locking block 7 on the inner wall of the adjusting sleeve 6 is embedded in the limiting groove 5, limiting the axial movement range of the adjusting sleeve 6 and enabling it to remain stable in a specific position.

[0036] In actual operation, the tightening force can be dynamically adjusted by moving the adjusting sleeve 6. When the adjusting sleeve 6 moves to the desired position, the cooperation design between the inner wall's locking block 7 and the limiting groove 5 ensures that the adjusting sleeve 6 will not shift due to external interference, thus guaranteeing the stability of the tightening force. In addition, the anti-slip layer surface on the outer side of the adjusting sleeve 6 has a uniformly distributed raised structure, which helps the operator avoid slipping when applying force, further improving the ease of operation.

[0037] During prolonged operation of the equipment, the lower cylinder head may be subjected to vibration or impact. In this situation, the elastic support 9 inside the mounting base 8 plays a crucial role. For example... Figure 4 As shown, the spring in the elastic support 9 can absorb these external forces, preventing loosening caused by stress concentration. Simultaneously, the serrated structure of the locking element 2 and its tight fit with the fixing element 1 further enhance overall stability, preventing changes in the fastening force due to external interference. Through the synergistic effect of the above structures, the reliability and durability of the lower cylinder head fastening assembly are achieved under complex working conditions.

[0038] Furthermore, the selection of materials and the control of processing precision are also crucial aspects of this invention. For example, the fixing component 1 and the locking component 2 are made of high-strength alloy steel to meet the requirements of mechanical strength and durability; the spring of the elastic support component 9 is made of high-quality carbon steel to ensure that it maintains good performance during long-term use. At the same time, the processing precision of each component must be strictly controlled, especially the dimensional tolerances of the guide groove, the limiting groove 5, and the locking block 7, to ensure smooth assembly and the stability of the overall structure.

[0039] By combining the above steps and principles, the lower cylinder head fastening assembly of this utility model exhibits high convenience in installation and disassembly, and demonstrates excellent reliability during long-term operation. It solves the problems of high operational precision requirements, strict part fit tolerances, and easy loosening or stress concentration in the prior art.

Claims

1. A lower cylinder head fastening assembly, characterized in that, It includes a fastening structure and an adjustment structure. The fastening structure includes a fixing member (1) and a locking member (2). The fixing member (1) has a guide groove on its outer side. The locking member (2) is connected to the fixing member (1) through the guide groove. The adjustment structure is located inside the fixing member (1) and is used to dynamically adjust the fastening force. Both ends of the fixing member (1) are provided with mounting seats (8). The mounting seats (8) are provided with elastic support members (9) inside.

2. The lower cylinder head fastening assembly according to claim 1, characterized in that, The adjustment structure includes an adjustment rod (3), with several limiting protrusions (4) on the outer side of the adjustment rod (3), and a limiting groove (5) formed between two adjacent limiting protrusions (4). A driving member (10) is provided at the end of the adjustment rod (3), and the driving member (10) is connected to the adjustment rod (3) by a thread. An adjustment sleeve (6) is provided on the outer side of the adjustment rod (3), and a locking block (7) matching the limiting groove (5) is provided on the inner wall of the adjustment sleeve (6). The locking block (7) is embedded in the limiting groove (5) to restrict the axial movement of the adjustment sleeve (6).

3. The lower cylinder head fastening assembly according to claim 1, characterized in that, The fastener (1) includes a main body section and a connecting section. The outer side of the main body section is provided with an annular groove, and the inner wall of the annular groove is provided with a number of positioning holes. One end of the connecting section is fixedly connected to the main body section, and the other end is provided with a mounting hole that matches the mounting base (8).

4. The lower cylinder head fastening assembly according to claim 1, characterized in that, The locking component (2) includes a locking ring and a locking block. The inner wall of the locking ring is provided with a serrated structure. The locking block is fixedly connected to the outer side of the locking ring. The end of the locking block is provided with a guide block that matches the guide groove. The guide block is embedded in the guide groove to realize the connection between the locking component (2) and the fixing component (1).

5. The lower cylinder head fastening assembly according to claim 1, characterized in that, The mounting base (8) includes a base and a support column. The base has an internal receiving groove. One end of the support column is fixedly connected to the base, and the other end has a connecting hole that matches the fixing member (1). The elastic support member (9) is located in the receiving groove and contacts the end of the support column.

6. The lower cylinder head fastening assembly according to claim 5, characterized in that, The elastic support (9) includes a spring and a support pad. One end of the spring is fixedly connected to the support pad, and the other end contacts the bottom of the receiving groove. The outer side of the support pad is provided with anti-slip texture.

7. The lower cylinder head fastening assembly according to claim 2, characterized in that, The drive component (10) includes a knob and a transmission rod. The knob is fixedly connected to one end of the transmission rod, and the other end of the transmission rod is provided with a threaded section that matches the adjusting rod (3). The transmission rod is connected to the adjusting rod (3) through the threaded section.

8. The lower cylinder head fastening assembly according to claim 2, characterized in that, The outer side of the adjusting sleeve (6) is provided with an anti-slip layer, and the surface of the anti-slip layer is provided with a number of evenly distributed protrusions.

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